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公开(公告)号：GB2335681A
公开(公告)日：1999-09-29
申请号：GB9903330
申请日：1999-02-16
Applicant: SMITH INTERNATIONAL
Inventor： EYRE RONALD K
IPC: B23B27/14 , E21B10/56 , E21B10/573
Abstract: A cutting element having a body which includes a grip portion (20) from which extends a protrusion (22) which is concentric to the grip portion. The diameter of the grip portion is larger than the diameter of the protrusion. Moreover, the upper portion of the protrusion (23) has a larger diameter then the base of the protrusion (26). An ultra hard material cutting layer (29) is formed on top of the protrusion and grip, covering and surrounding the protrusion resulting in a cutting layer that is mechanically interlocked with the body of the cutting element. A transition layer (50, fig. 10) may be incorporated between the protrusion and the ultra hard material layer. The transition layer is preferably encapsulated by the ultra hard material layer The upper surface of the protrusion can have a variety of different profiles (see figs. 3 to 7).
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公开(公告)号：CA2261486A1
公开(公告)日：1999-09-25
申请号：CA2261486
申请日：1999-02-12
Applicant: SMITH INTERNATIONAL
Inventor： KESHAVAN MADAPUSI K , EYRE RONALD K
IPC: E21B10/56 , E21B10/573 , B23B51/00 , C04B37/02 , E21B10/46
Abstract: A non-uniform interface is formed between a polycrystalline ultra hard material layer and a cemented tungsten carbide substrate, or a polycrystalline ultra hard material layer and a transition layer, or a transition layer and a substrate of a cutting element. A first sheet made from an intermediate material is formed and embossed on one face forming a nonuniform pattern raised in relief on the face. The embossed sheet is placed on a face of a presintered substrate. An ultra hard material sheet is formed and embossed, forming a non-uniform face complementary to the non-uniform face on the sheet of intermediate material. The ultra hard material sheet is placed over the intermediate material sheet so that the complementary faces are adjacent to each other. The assembly of substrate and sheets is sintered in a HPHT process. The sintering process causes the first sheet to become integral with the substrate and results in a substrate having a non-uniform cutting face onto which is bonded a polycrystalline ultra hard material layer. Embossed transition material sheets may be employed between the ultra hard material sheet and the first sheet to form transition layers with uniform or non-uniform interfaces.
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公开(公告)号：GB2334984A
公开(公告)日：1999-09-08
申请号：GB9903333
申请日：1999-02-16
Applicant: SMITH INTERNATIONAL
Inventor： EYRE RONALD K
IPC: E21B10/56 , E21B10/567 , E21B10/46
Abstract: A cutting element which has a cutting table 14 made up of segments 16/18 of an ultra hard material. Each segment 16/18 may be made from a finer or a coarser grade of ultra hard material where the coarser is said to aid the cutters toughness and the finer to aid the cutters resistance to abrasion. The segments 16/18 are aligned side by side over a cutting face 12 of the cutting element to form the cutting table 14. The material grade and/or material type of each segment 16/18 may alternate across the cutting face. The segments 16/18 may also be arranged in a number of configurations for example concentric rings, linear chordwise strips, parallel strips and spiral strips.
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公开(公告)号：ZA991431B
公开(公告)日：1999-08-24
申请号：ZA991431
申请日：1999-02-23
Applicant: SMITH INTERNATIONAL
Inventor： EYRE RONALD K
Abstract: A cutting element having a body which includes a grip portion from which extends a protrusion which is concentric to the grip portion. The diameter of the grip portion is larger than the diameter of the protrusion. Moreover, the upper portion of the protrusion has a larger diameter than the base of the protrusion. An ultra hard material cutting layer is formed on top of the protrusion and grip, covering and surrounding the protrusion resulting in a cutting layer that is mechanically interlocked with the body of the cutting element. A transition layer may be incorporated between the protrusion and the ultra hard material layer. The transition layer is preferably encapsulated by the ultra hard material layer.
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公开(公告)号：ZA967657B
公开(公告)日：1997-08-27
申请号：ZA967657
申请日：1996-09-11
Applicant: SMITH INTERNATIONAL
Inventor： ANDERSON NATHAN R , KESHAVAN MADAPUSI , EYRE RONALD K , RAI GHANSHYAM
IPC: B01J20060101 , B01J
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Patent Agency Ranking
公开(公告)号：CA2560645C
公开(公告)日：2014-03-04
申请号：CA2560645
申请日：2006-09-22
Applicant: SMITH INTERNATIONAL
Inventor： EYRE RONALD K , WILLIAMS JOHN L
IPC: E21B10/46
Abstract: Cutting elements and bits incorporating such cutting elements are provided. The cutting elements have a substrate, a first ultra hard material layer formed over the substrate, and a second ultra hard material layer formed over the first ultra hard material layer. The second ultra hard material layer has a thickness in the range of 0.05 mm to 2 mm.
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公开(公告)号：IE86276B1
公开(公告)日：2013-10-23
申请号：IE20120108
申请日：2012-03-01
Applicant: SMITH INTERNATIONAL
Inventor： BELNAP J DANIEL , CARIVEAU PETER THOMAS , EYRE RONALD K , CORBETT LOEL
Abstract: A system for producing thermally stable cutting elements including a heat source, a pressure vessel, at least one polycrystalline diamond body attached to a carbide substrate, and a leaching agent is disclosed, wherein the heat source included a container comprising at least one receiving mechanism and at least one retention mechanism, and wherein the polycrystalline diamond body comprises interconnected diamond particles with a catalyzing material to be removed from the interstitial spaces interposed between the diamond particles, and wherein in leaching agent is disposed in the pressure vessel, and wherein the leaching agent removes the catalyzing material from the interstitial spaces interposed between the diamond particles of the at least one polycrystalline diamond body, and wherein the at least one retention mechanism of the pressure vessel seals at least a portion of the carbide substrate into the at least one receiving mechanism and prevents the leaching agent from contacting at least a portion of the carbide substrate.
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公开(公告)号：IE86274B1
公开(公告)日：2013-10-09
申请号：IE20120262
申请日：2005-09-20
Applicant: SMITH INTERNATIONAL
Inventor： EYRE RONALD K , OLDHAM THOMAS W , GRIFFO ANTHONY
Abstract: Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals. A metallic substrate is attached to the diamond body. A working surface is positioned along an outside portion of the diamond body, and the diamond body comprises a first region that is substantially free of a catalyst material that extends a partial depth from a surface into the body, and a second region that includes the catalyst material. The diamond body first region extends from the working surface to depth of at least about 0.02 mm to a depth of less than about 0.09 mm. The diamond body includes diamond crystals having an average diamond grain size of greater than about 0.02mm, and comprises at least 85 percent by volume diamond based on the total volume of the diamond body. The body can include natural diamond grains and/or a blend of natural and synthetic diamond grains, and is treated to form the first region. Before treatment, a portion of the body to be treated is finished to an approximate final dimension so that the depth of the first region of the finished product is substantially the same as when treated. During treatment, catalyst materials as well as non-catalyst metallic materials are removed from the diamond body to provide a further enhanced degree of thermal stability.
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公开(公告)号：IE20120108A1
公开(公告)日：2012-09-26
申请号：IE20120108
申请日：2012-03-01
Applicant: SMITH INTERNATIONAL
Inventor： EYRE RONALD K , BELNAP J DANIEL , CARIVEAU PETER THOMAS , CORBETT LOEL
Abstract: A system for producing thermally stable cutting elements including a heat source, a pressure vessel, at least one polycrystalline diamond body attached to a carbide substrate, and a leaching agent is disclosed, wherein the heat source included a container comprising at least one receiving mechanism and at least one retention mechanism, and wherein the polycrystalline diamond body comprises interconnected diamond particles with a catalyzing material to be removed from the interstitial spaces interposed between the diamond particles, and wherein in leaching agent is disposed in the pressure vessel, and wherein the leaching agent removes the catalyzing material from the interstitial spaces interposed between the diamond particles of the at least one polycrystalline diamond body, and wherein the at least one retention mechanism of the pressure vessel seals at least a portion of the carbide substrate into the at least one receiving mechanism and prevents the leaching agent from contacting at least a portion of the carbide substrate.
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公开(公告)号：GB2447776B
公开(公告)日：2012-08-01
申请号：GB0805168
申请日：2008-03-20
Applicant: SMITH INTERNATIONAL
Inventor： KESHAVAN MADAPUSI K , EYRE RONALD K , GRIFFO ANTHONY , CARIVEAU PETER THOMAS
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